This leaves me thoroughly confused. While the text seems to indicate the contrary, the ABNF makes it clear that
coap://[fe80::a%25en1]/.well-known/core is intended to indicate the zone ID of "25en1". This is the only place in a URI where a percent is proposed to be used in stand-alone fashion -- everywhere else it occurs as part of pct-encoded. For a good reason. E.g., this works perfectly to talk to localhost in Safari and Chrome: http://[%3a%3a1]/ Any other character but % (or []A-Fa-f0-9:] of course) would be less confusing for indicating zone-ids. I'd recommend choosing one from sub-delims, such as * or &. Grüße, Carsten -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
